For the second year in a row, we are proud to announce that the R.L. Deppmann Company has been named a 2019 Top Workplace Award …
Centrifugal Pump Gauge Readout: Adjustments to Balancing for Glycol Temperature
Glycol correction factors were the subject of many of the last few R. L. Deppmann Monday Morning Minutes. While writing these articles, I thought about …
Rebates, Rebates, Rebates
Equipment Efficiency Upgrades Incentives In Michigan and Ohio, both electric and gas utilities are offering rebates for building HVAC equipment efficiency upgrades as well as …
Centrifugal Pump Gauge Readout Corrections for Hydronic Glycol Systems
Ask any test/balance or service technician in the hydronic HVAC world to convert PSIG to feet of head and the multiplier of 2.31 is the …
Troubleshooting & Cleaning a DriSteem Humidifier Probe Assembly
If you have a DriSteem steam humidifier (including the Vaporstream, Vapormist or GTS model operating on standard softened or potable water) you need to periodically …
Centrifugal Pump Gauge Readout Corrections-Velocity Head Corrections
We recently had an inquiry from an engineer who was concerned about pump operation compared with the submitted pump curve. It appeared from the balance …
The Department of Energy (DOE) Pump Standards – Now is the Time to Choose
The Department of Energy (DOE) pump standards goes into effect on January 27, 2020. This affects projects you are sending out to bid right now! …
Piping Pressure Drop Correction Factors when using Glycol in Hydronic HVAC Systems
The last couple of R. L. Deppmann Monday Morning Minutes introduced the BTUH corrections required when using glycol in hydronic heating and cooling systems. …
How to Use A Refractometer to Test Glycol Concentration
A hydronic heating or cooling system is one of the most efficient types of systems when it comes to providing comfort for a building. Thanks …
BTUH Correction Factors when using Ethylene Glycol in Hydronic HVAC Systems
In the last R. L. Deppmann Monday Morning Minute, I provided the BTUH correction factors for propylene glycol. We don’t want to play favorites so …